Formation tester



April 1940. B. R. M cKlNLEY FORMATION TESTER 2 Sheets-Sheet 1 Filed Oct. 25, 1957 4 k9 I. EF=P|| AVA/1,: r.

INVE/V TOR. Bow R. N

T TOR/YE)! April 16, 1940.

B. RQMQKINLEY 2,197,078

FORMATION TESTER Filed Oct. 25, 1957 2 Sheets-Sheet 2 ll'im l 4 I 2a 9 \J if .Z'N VE/V TOR. Bow R. {WK/ may.

by X l krToRlvfiy,

Patented Apr. 16, 1940' 4 UNITED: STATES PATENT OFFICE FORMATION TESTER Boyd R. McKinley, Los Angeles, Calif. Application October 25, 1937, Serial No. 170,848

'1 Claims.

H in one direction.

Another object is to provide a novel construction in a formation tester wherebythe ports of the tester are gradually opened, whereby cutting of the ports and orifice is prevented and also a more complete and representative sample of the production in the well is obtained.

Other objects, advantages and'features of invention may appear from the accompanyingdrawings, the subjoined detailed description and the appended claims. I

In the drawings:

Figure I is a side elevation of my casing and formation tester. v

Figure 2 is a quarter sectional view of the upper portion of the tester.

Figure 3 is a quarter sectional view of the central portion of the tester.

Figure 4 is a quarter sectional view of the lower portion 01 the tester. 1

Figure 5 is a sectional view taken on: line 5- -5 of Figure4..

Figure 6 is a fragmentary vertical sectional view of a slightly modified form of port actuating means.

' Referring moreparticularly to the drawings,

my casing and formation tester i comprising the assembly of a control head 2, a packer 3, and a ported intake sleeve 4. The sub 5 is provided with athreaded pin 6, on to which the drill pipe screws.

v The drill pipe is not shown, since its construction is usual and well known.

The sub 5 extends into the sleeve 1 through a packing gland 8. Coarse threads '9 are cut' on the inside of the sleeve I, and the sub 5 is provided' with coarse exterior threads l0, which mesh with the threads 9. Thus, it will be evident that ii the sleeve 1 is held stationary. rotation of the sub 5 will cause this sub to move longitudinally within the sleeve. The sub 5 is hollow and the pin 6 is also centrally drilled, so that gas and oil can pass upwardly therethrough, for a purpose which will be subsequently described.

A pipe section II screws into the lower end of the sleeve I, or is otherwise fixedly attached thereto; 'This pipe extends longitudinally through the packer assembly and screws into thetop of the ported shoe 4, as shown in Figure 4.

A simple tube l2 screws into the lower end of the sub 5, and extends downwardly through the pipe II, and the lower end thereof is slidably fitted in the shoe 4, as will be further described.

pipe il, when l The sample tube 12 slides in the the control head 2 is operated.

The packer assembly 3 of the type shown in Patent #2,005,955 consists of a packer i3 and slips i4 slidably mounted below the packer or as here shown the slips are slidably mounted in the lower metal part of the packer. These slips are adapted to engage either the-casing or the formation, wherever the tester may be run. Spring fingers l5 engage the wall or the bore and these fingers are mounted on collars l6, one 01 the 001- 15 lars being releasably attachedto the'pipe II by means of the pin H, which enters the bayonet slot l8. The pin." is mounted on the pipe II and extends into the slot l8; a short sleeve I8.

connects the collars i6, and the collars may be 29 attached to this sleeve orthey'may be'integrally formed therewith. When the fingers ii are dragging against the wall of the bore, rotation of the pipe H to the left will release the pin I'I from the slot It. When the entire tester is pipe Ii is also held'against rotation since the pin I7 is held within the elongated slot 88.

Since the pipe ii is held against rotation, the sleeve i is also held stationary andconsequ'ently rotation of the drill pipe will cause the sub 5 to be screwed into the sleeve l, and causes the sub to move downwardly in the sleeve. g

The sample tube It is thus pushed downwardly into the shoe 4. This shoe consistsof an outer cylindrical body i9, below which the plug 20 ex--' 40 tends. A pair of spaced packings 2l- -22 are mounted within the body !9 and lit closely around the sample tube I2. I

A plurality of ports 23 extend through the wall of the tube l2, and when the tool is run into the bore, these ports are closed by the packing M, as shown in Figure 4. A plurality of intake holes 24 extend through the wall of the body I9,

and these holes are positioned by the packing 2| and 22. When the sub 5 is rotated by the drill pipe as previously described, the sample tube .12 will be pushed downwardly intothe shoe 4,

until the ports 23 pass below the packing 2|,

whereupon oil, gas, or the like, within the bore,

' 2' armors will pass into the holes 24, thence through the ports 28 into the sampling tube l2.

Continued rotation of the drill pipe will cause the tube l2 to be pushed downwardly a further amount within the shoe 4 until the ports 23 are closed by the packing 22, and the sample within the tube I2 will be trapped and can be raised to the surface. The lower end of the tube i2 is closed so that any material within the tube cannot drain out of the bottom.

It will be evident from the foregoing descrip-- tion that the ports 23 can be gradually opened or closed and also in both open and closed position of these ports, an effective seal is provided against leakage by the packing 2| or 22. It will also be evident that rotation of the drill pipe in one direction will cause the ports 23 to move downwardly into position to receive a sample, and will then continue to move the ports downwardly until the sampling tube is again sealed with the material trapped therein. In Figure 6 I have shown a slightly modified means of moving the sampling tube 25 longitudinally of the tool. A head 26 is attached to the upper end of a pipe 21. The pipe 2'! is identical to the pipe I I previously described. and the arrangement of the pipe, as well as the arrangement of the packer and the port shoe, are the same as previously described. The sub 28 extends into the head 26, and is mounted on antifriction bearings 29. The upper end of the tube 25 is threaded as shown at 30, and this portion of the tube screws through the sub 28. Longitudinal key ways 3| in the upper end of the tube 25 key this tube to the head 26. The purpose of these key ways is to prevent rotation of the tube 25. This tube is held against rotation since the pipe 21 and head 26 are held against rotation by the packer and slip assembly previously described. Rotation of the drill pipe will cause the sub 28 to rotate, whereupon the tube 25 will be pressed downwardly due to the action of th threads 30. i

The lower end of the tube 25 is arranged'as shown in Figure 4.

Having described my invention, I claim:

1. A casing and formation tester for bored holes comprising a controlhead, a sub rotatably mounted in the control head, wall engaging means connected to the control head to nonrotatably hold said control head in the hole inter-engaging means on the sub and control head, whereby rotation of the sub relative to the control head will impart longitudinal movement to said sub, said co-acting means being constantly in engagement, a sampling tube depending from the sub, an intake shoe. said tube extending into the shoe and longitudinally slidable therein, said shoe having holes therein and said tube having ports therein, said ports being moved into and out of registry with the holes during inter-engaging means on the sub and control head, whereby rotation of the sub relative to the control head will impart longitudinal movement to said sub, said co-acting means being constantly in engagement, a sampling tube depending from the sub, an intake shoe, said tube extending into the shoe and longitudinally slidable therein, said shoe having holes thereirrand said tube having ports therein, said ports being moved into and out of registry with the holes on longitudinal movement of the sub and sampling tube and rotation of the sub in one direction, said-intake shoe having packing therein, arranged above and 3. A casing and formation tester for bored holes comprising a control head, a sub rotatably mounted in the control head, wall engaging means connected to the control head to nonrotatably hold said control-head in the hole, co-- acting means on the sub and control head. whereby rotation of the sub relative to the control head will impart longitudinal movement to said sub, said co-acting means being constantly in engagement, a sampling tube depending from the sub, an intake shoe, said tube extending into the shoe and longitudinally slidable therein, said shoe having holes therein and said tube having ports therein, said ports being moved into and out of registry with the holes on longitudinal movement of thesub and sampling tube and rotation of the sub in one direction, means nonrotatably holding the control head when in position in the bored hole, said intake shoe havin packing therein arranged above and below the holes in the shoeysaid packing bearing against the sampling tube, and packer means depending from the control head.

4. A casing and formation tester for bored holes, comprising a control head, a sub rotatably mounted in the control head. wall engaging means connected to the control head to non-.

rotatably hold said control head in the hole. co-

acting threads on the sub and control head, said sampling tube depending from the sub, an intake shoe, said tube extending into the shoe, said shoe having holes therein and said tube having ports therein, said ports being moved into and out of registry with the holes on longitudinal movement of the sub, and the sampling tube, and rotation of the sub in one direction.

5. A casing and formation tester for bored holes comprising a control head, a sub rotatably mounted in the control head, wall engaging means connected to the control head to nonrotatably hold said control head in the hole, coacting threads on the sub and control head, said threads being in constant engagement whereby rotation of the sub relative to the control head will impart longitudinal movement to said sub. a sampling tube depending from the sub, an intake shoe. said tube extending into-the shoe, said shoe having holes therein and said'tube having ports therein, said ports being moved into and out of registry withthe holes on longitudinal movement of the sub and the sampling tube and rotation of the sub in one direction, and spaced packing within the intake shoe and surrounding the sampling tube, said packing being arranged above and below said holes- 6. A casing and formation tester for bored holes, comprising an intake shoe on the lower end oi the tester, a packer, a control head on the upper end of the tester, a pipe attached to the control head and the intake shoe, said pipe extending through the packer, a sampling tube extending through the pipe and into the control head, said intake shoe having holes in the side thereof, said sampling tube having openings 0.10am 3 therein arranged to be registered with said tending through the pipe and into the control holes, said control head including a sub rotatably head, said intake shoe having holes in the side mounted therein, inter-engaging threads on the thereof, said sampling tube having openings control head and sub whereby rotation of the therein arranged to be registered with said holes,

5 sub will impart longitudinal movement to the said control head including a sub rotatably 5 sampling tube, said sampling tube being secured mounted therein, inter-engaging means on .the to, the sub, said threads being in constant ensub and control head whereby rotation of the 'gagement, and wall engaging means connected sub will impart longitudinal movement to the to the control head whereby the control head is sub and the sampling tube, said sampling tube 10 held against rotation in a bored hole. being secured to the sub, said inter-engaging 10 '1. A casing and formation tester (or bored means being in constant engagement, and wall holes, comprising an intake shoe on the lower engaging means connected to the control head end 01 the tester, a packer, a control head on the whereby the control head is held against rotation upper end of the tester, a pipe attached to the in a bured hole. 1 control head and the intake shoe, said pipe ex 4 tending through the packer, a sampling tube ex- BOYD n. MCKIN'LEY. 15 a 

